Helicobia domquixote

Carvalho-Filho, Fernando Da Silva, Gorayeb, Inocêncio De Sousa, Soares, Jéssica Maria Menezes & Souza, Matheus Tavares De, 2018, Flesh flies (Diptera: Sarcophagidae) from a white-sand habitat in the Brazilian Amazon, with the description of four new species, Zootaxa 4504 (3), pp. 401-417: 407-408

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Helicobia domquixote

sp. nov.

Helicobia domquixote  sp. nov.

( Figs 17–21View FIGURES 17–21)

Type material. HOLOTYPE ♂ ( MPEGAbout MPEG), labelled as follows: BRASIL-PARÁ, BR-422 / Km 11, sul de Cametá [= south of Cametá City], Campina [= white-sand vegetation] / 2°15’12”S 49°36’12”W / Armadilha de moscas [= fly trap] / 0 7 a [= to] 15.iv.2015 [printed on white label] // BRASIL-PARÁ-Cametá / Cols: [= collectors] F.S. Carvalho Fh., Jazon / Quaresma, A. Quaresma / D. Guimarães, K. Monteiro [printed on white label; holotype in good condition, with extended terminalia].GoogleMaps 

PARATYPE. 1 ♂ ( MPEGAbout MPEG): Brazil, Pará, Cametá City , white-sand vegetation, Malaise trap, 8–21.iv.2015 [printed on white label; specimen in good condition with abdomen and terminalia cleared and preserved in glycerin in a microvial pinned beneath the specimen]  .

Diagnosis. Phallus black. Distiphallus with an ear-like, membranous, laterally-directed rounded projection ( Figs 19, 21View FIGURES 17–21). Capitis sclerotized and very long, about two-thirds of distiphallus length ( Figs 19–21View FIGURES 17–21).

Description. Male. Body length: 5.5–8.0 mm (n = 2).

Head. Fronto-orbital and parafacial plates covered with yellowish-silver microtrichia. Parafacial plate with setulae sparsely distributed along inner eye margin. Frontal vitta velvet black, with row of 8 frontal setae reaching end of pedicel. Inner vertical setae not differentiated. Outer vertical setae developed. Ocellar setae shorter than frontal setae. One pair of postocellar setae, no proclinate setae and 1 reclinate fronto-orbital seta. Pedicel reddish, first flagellomere with gray microtrichia; arista short plumose on basal 2/3. Palpus black.

Thorax. Chaetotaxy: acrostichals 0+1 (reduced), dorsocentrals 2+3, intra-alars 2+2, supra-alars 2+3, postpronotals 3, postalars 2, notopleurals 4 (2 strong primary setae and 2 short subprimary setae), anepisternals 8, katepisternals 3, merals 6, scutellum with 1 pair of basal setae, 1 pair of lateral setae, 1 pair of apical setae and 1 pair of small discal setae. Legs. Black. Fore femur with row of setae on posterodorsal and posteroventral margins. Fore tibia with 1 posteroventral seta. Mid femur with 3 median anterior setae, 1 row of posteroventral setae, 2 preapical posterior setae, and without a ctenidium on posteroventral surface. Mid tibia with 2 median anterodorsal, 4 posterodorsal, 1 median ventral, and 1 posterior setae. Hind femur with rows of anteroventral and anterodorsal setae, and 1 preapical posterodorsal seta. Hind tibia with 1 subapical anteroventral, 2 anterodorsal, 2 posterodorsal, 1 posterior and 1 posteroventral setae. Wing. Hyaline. Costal spine absent. Vein R 1 with setae on proximal half. Third costal section bare ventrally.

Abdomen. Tergites dark brown in ground color. Syntergite 1+2 and tergites 3 to 5 with a band of silvery-gray microtrichia on anterior 4/5 on dorsal and lateral surfaces; posterior margin of tergite 5 reddish. Sternites light brown, covered with black setulae and without differentiated marginal setae. Tergites 3 and 4 with one lateral seta. Tergite 4 with one pair of median marginal setae. Terminalia. Sternite 5 light brown with posterior margin Vshaped. Inner margin of arms of sternite 5 with a patch of short and thick black setae anteriorly. Syntergosternite 7+8 and epandrium orange, covered with yellowish microtrichia. Cercus shorter than epandrium in lateral view, dark brown, progressively narrowing towards apex in lateral view ( Fig. 17View FIGURES 17–21). Distal portion of cercus curved ventrally and cercal apex rounded ( Fig. 17View FIGURES 17–21). Surstylus orange, elliptical, with long setae near apical margin ( Fig. 17View FIGURES 17–21). Pregonite elongate, longer than postgonite, gently curved ventrally, with a small seta apically ( Fig. 18View FIGURES 17–21). Postgonite claw-shaped, with a strong median seta and some small pointed setae near ventral margin ( Fig. 18View FIGURES 17–21). Phallus black ( Fig. 19View FIGURES 17–21). Basiphallus small, shorter than distiphallus ( Fig. 21View FIGURES 17–21). Phallic tube saddle-shaped in lateral view ( Fig. 21View FIGURES 17–21). Juxta elongate, membranous distally ( Figs 20–21View FIGURES 17–21). Distiphallus with a membranous rounded plate, smoother and of lighter color and more transparent than rest of distiphallus, laterally-directed and perpendicular to vesica ( Figs 20–21View FIGURES 17–21). Harpes membranous, covered with many small pigmented projections ( Figs 19–20View FIGURES 17–21). Capitis very long, about two-thirds length of distiphallus, pigmented and tubular, tapering toward apex ( Figs 19–20View FIGURES 17–21). Apical fourth of capitis bifid, with tips converging in ventral view ( Fig. 20View FIGURES 17–21). Lateral styli elongate and thin ( Figs 20–21View FIGURES 17–21). Sheath of lateral styli elongate and pigmented, flattened and desclerotized distally ( Figs 20–21View FIGURES 17–21). Vesica rounded in ventral view, not visible in lateral view ( Fig. 20View FIGURES 17–21).

Female. Unknown.

Remarks. This new species differs from the others in the genus in having distiphallus with a membranous, laterally-directed rounded projection and in the shape of the capitis, which is very long (about two-thirds of distiphallus length) and sclerotized ( Figs 19–20View FIGURES 17–21). Helicobia surrubea (Wulp)  also shows a very long capitis; however, this species differs from H. domquixote  sp. nov. in having juxta very long and ventral portion of distiphallus with many pin-like membranous projections. Helicobia stellata (Wulp)  and H. penai Tibana, 1976b also have distiphallus with a laterally-directed membranous projection, but in these species this projection is glossiform ( Tibana 1976a: figs 14–15; Tibana 1976b: figs 17–18), whereas in H. domquixote  sp. nov. this projection is ear-shaped ( Fig. 21View FIGURES 17–21).

Distribution. NEOTROPICAL—Brazil (Pará).

Etymology. The specific epithet “domquixote”, which should be treated as a noun in apposition, refers to the shape of the distiphallus of this species, which resembles the spear of Miguel de Cervantes’s famous character Don Quixote.


Museu Paraense Emilio Goeldi